Feeder for printing or other machines



I No. 751,284:

PATENTED FEB. 2, 1904,

O. G. HARRIS.

FEEDER FOR PRINTING OR OTHER MACHINES.

APPLICATION FILED OCT. 18. 1902.

N0 HODEI v 2 SHEETS-SHEET 1- v I 6mm;

PATEN'TED FEB. 2, 1904.

BR MACHINES. v

' FEEDER FOR APP no MODEL.

4 ARRIS PRINTING OR 0TH LIOATIOKIILED 0UT.18. l9

UNITED STATES Patented February 2, 1904.

PATENT OFFICE.

CHARLES GRANT HARRIS, OF. IL S, OHIO, ASSIGNOR To THE HARRIS AUTOMATICPRESS COMPANY, OF NILES, OHIO, A CORPORATION OF OHIO.

FEEDER FOR PRINTING OR OTHER MACHINES.

SPECIFICATION forming part of Letters Patent No. 51,284, dated February2, 1904. Application filed October 18, 1902. Serial No. 127,872. (Nomodel.)

The objects of this invention are to provide an improved feederespecially adapted for stock of certain thicknessessuch as paper bags,&c.-to avoid the formation of kinks in the stock as it is fed up to thegate, to so construct the gate as to insure proper passage,

avoiding the consequences usually resulting from wear of the gate-block,which latter instead of impeding will tend to facilitate the passage ofthe stock, and also to so construct the feeding-rolls as to compensatefor any bend or irregularity in the pile.

The invention will be hereinafter fully set forth, and particularlypointed out in the claims.

In the accompanying drawings, Figure 1 is a side View with parts insection. plan view with parts broken away. Fig. 3'is a section throughthe gate. Fig. i is an-enlarged sectional view of one of the feed-rolls.

Referring to the drawings, 1' designates the feed table or hopper, 'inthe bottom of which are open-ended slots 2 to accommodateauxiliaryfeed-rolls 3, mounted-on a shaft 4, driven by a chain belt 5, whichderives its power from the positively-driven shaft 6 of themainfeedrolls. On the periphery of each roll 3 is a segment of rubber3*.

7 designates the main feed-rolls, mounted gage the bottom of the pile ofstock set on an 4 incline on the feed-tableand held by the side and reargages up against forward gages 8, the

articles being fed one at a time from the bottom of the pile by thefeed-rolls 7 engaging therewith.

Fig.2 is a A segment of the periphery of each feedroll is cut out toaccommodate a curved plate 9, pivoted at lOwithin a slot 11, leadingfrom the cut-out, such plate having a rubber covering 12 on its outerface. These rubber-covered plates are normally held tangentially beyondthe circumference of the rolls by springs 13, the outward movements oftheir free ends being limited by studs 14, working in slotted plates 15.The tendency of these tangential segments is to .reach out, so to speak,and

engage the stock and feed it forward in the rotation of the rolls, thesprings allowing the segments to adjust themselves to the conditions ofthe stock, which is widely variant.

The gate is composed of an upper stationary member 16 and a lower memberor block 17 which in the presentinstance is rotary, so as to travel withthe stock and aid in feeding it forward. The upper or stationary memberis shown in the form of a rubber-covered roll fast on a cross-rod 17while the block consists of a metallic roll mounted on the feeder-shaft6 at the center of the series of feed-rolls. The

upper stationary member may be adjusted axially to readily compensatefor wear-occa-- sioned byicontact of the stock-with its periphcry. Theforward edge of the pile of stock is guided in between the two membersof the gate, the space between which allows of the passage of but onearticle at a time. The gateblock being rotary tends also to feedthe-stock forward,-and as it constantly presents a fresh surface thedifficulties arising from the wear on a stationary block, resulting inretarding the passage of the stock, are successfully overcome.

As the stock is fedlby the feed-rolls beyond the gate it is engaged bythe withdrawal rolls "19 and pulled forward, so as to be taken up by thegripper mechanism (not shown) of the press. The stock being caught atthe center of the pile by the two members of the gate has a tendency tobend upward on either' side bottom of the pile, regardless of the bendstherein. It is not essential, however, that the feed-rolls be equippedwith these tangential rubber sections, as the rubbers -may be secureddirectly to the peripheries, as is the case with the auxiliaryfeed-rolls. These latter rolls are designed for use in feeding largestock, and being driven at the same speed as the main feeders materiallyaid in advancing the lowermost article of a pile. With small stock theauxiliary feed-rolls may be dispensed with.

In speaking of the yielding segmental sections of the feed-rolls asrubbers reference is meant to the function performed by suchparts-namely, that of feeding or separating the stock by a rubbingaction.

a I claim as my invention 1. In a feeder for printing and other machinesfeed-rolls having each a rubber section, means for causing such sectionsto normally occupy tangential positions relative to the rolls, and meansfor guiding and limiting the outward movements of such sections, as setforth.

2. In a feeder for printing and other machines, rotary feed-rolls havingeach a segment of its periphery pivotally seciired thereto at one end,means for normally holding such segments tangentially to the rolls,means for guiding and limiting the outward movements of such sections,and rubber coverings 3 for the latter, as set forth.

chines, a gate composed of an upper stationary member having a curvedrubber-covered edge, and a gate-block having a correspondingly curvedsmooth edge, such block being movable in the direction of the passage ofthe stock.

5. In a feeder for printing and other machines, a gate composed of anupper member having a curved rubber-covered edge, and a gate-blockconsisting of a metallic roll designed to rotate in the direction oftravel of thestock, as set forth.

6. In a feeder for printing and other machines, a gate composed of anupper stationary member in the form of a roll having a rubber periphery,and a rotary metallic roll forming the gate-block, as set forth.

7. The combination with the main feedershaft and the feed-rolls, of thegate having an upper stationary member provided with a curved edge, anda gate-block consisting of a metallic roll mounted on such shaftintermediate said feed-rolls, said feed-rolls having each a rubbersection on its periphery, as set forth.

8. The combination with the main feedershaft and the feed-rolls, of thegate having an upper stationary member provided with a curved edge, anda gate-block consisting of a metallic roll mounted on such shaftintermediate said feed-rolls, said feed-rolls having each a rubbersection pivotally secured thereto at one end and normally extendedtangentially to the rolls, and means for limiting the movements of suchsections, as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES GRANT HARRIS.

Witnesses:

CHARLES GINDER, F. (Jr. ALLEN.

